NXP Semiconductors MCX-N9 EVK Series - Page 11

NXP Semiconductors
UM12036
MCX-N9XX-EVK Board User Manual
Part
identifier
Jumper type Description Reference section
MCX-N9XX-EVK
schematic
JP43 1x3 pin header PMIC reset
• Pin 1-2 shorted (default setting): PMIC reset is supported
through the SW5 push button
• Pin 2-3 shorted: PMIC reset is supported through the SW1
(MCU reset) button
Section 2.1
JP44 1x3 pin header P3V3 source selection
• Pin 1-2 shorted (default setting): ADM7172 LDO is
selected for P3V3 output
• Pin 2-3 shorted: PCA9420 PMIC LDO2 is selected for
P3V3 output
Section 2.1
JP45 2x3 pin header • Pin 1-2 shorted (default setting): VDD_P4 is sourced
from a P3V3 power supply
• Pin 2-3 shorted: VDD_P4 is sourced from P1V8 supply
Note: If VDD_P4 is sourced from P3V3 while MCU_PWR
is sourced by P1V8, P3V3 MUST be sourced from PMIC
LDO2_OUT.
Section 2.1.1
JP46, JP41 1x2 pin header P1V8 source selection
• JP46 pin 1-2 shorted (default setting): PCA9420 PMIC
SW2 is selected for P1V8 output
• JP41 pin 1-2 shorted: PCA9420 PMIC LDO1 is selected
for P1V8 output
Section 2.1
JP47 1x3 pin header • Pin 1-2 shorted (default setting): VDD_P2 is sourced
from a P3V3 power supply
• Pin 2-3 shorted: VDD_P2 is sourced from P1V8 supply
Note: If VDD_P2 is sourced from P3V3 while MCU_PWR
is sourced by P1V8, P3V3 MUST be sourced from PMIC
LDO2_OUT.
Section 2.1.1
JP48 1x2 pin header P1V1 output
• Pin 1-2 shorted (default setting): PCA9420 PMIC SW1 is
selected for P1V1 output
Section 2.1
JP49 1x2 pin header ISP mode enable/disable
• Open (default setting): Normal operation
• Shorted: ISP mode
Section 1.7
JP50 1x2 pin header Ethernet PHY clock input selection
• Pin 1-2 open: Enables crystal oscillator (Y7) to output 50
MHz clock to Ethernet PHY (LAN8741)
• Pin 1-2 shorted (default setting): Disables the crystal
oscillator (Y7) and allows the target MCU to provide a 50
MHz reference clock to Ethernet PHY (LAN8741) through
P1_4/ENET0_TXCLK
Section 2.6
JP51 1x2 pin header Controls the enabling/disabling of the USB power switch
(U26)
• Open: Disconnects pull-up resistor from P0_11/USB0_ID
• Shorted (default setting): Connects pull-up resistor
to P0_11/USB0_ID for enabling USB FS mode in case
P0_11 is used for another function
Section 2.3
Table 3. MCX-N9XX-EVK jumpers...continued
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User manual Rev. 1 — 20 January 2024
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